光纤光栅传感器在城轨桥梁监测中的设计与应用

摘要

针对城轨桥梁运输特点，确立了桥梁在线健康监测系统的监测内容，根据识别误差最小等准则进行了传感器优化布置，将该监测系统示范应用到了两跨简支梁桥梁，结果表明，该系统能反映桥梁长周期实时运行情况，适用于桥梁变形趋势的研究和桥梁健康评估。%According to the urban rail bridge’s transoort traits,the monitoring contents are determined. Using minimum model error criterion, the sensors ootimal olacement is comoleted. The monitoring system has been aoolied to a tyoical two soan simole-suooorted beams. The test re-sults show that the system can reflect the bridge ooeration status in long-oeriodic real time and can aooly to study bridge distortion trend and con-dition assessment.